Zobrazeno 1 - 10
of 689
pro vyhledávání: '"Ohdachi S."'
Publikováno v:
Nucl. Fusion, 61, 126016 (2021)
The aim of the present study is to analyze the saturation regime of the energetic-ion-driven resistive interchange mode (EIC) in the LHD plasma. A set of non linear simulations are performed by the FAR3d code that uses a reduced MHD model for the the
Externí odkaz:
http://arxiv.org/abs/2201.00637
The aim of the present study is to perform a theoretical analysis of different strategies to stabilize energetic-ion-driven resistive interchange mode (EIC) in LHD plasma. We use a reduced MHD for the thermal plasma coupled with a gyrofluid model for
Externí odkaz:
http://arxiv.org/abs/2010.04598
Akademický článek
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Autor:
Shimizu A., Ido T., Yoshinuma M., Ida K., Ohdachi S., Makino R., Ogasawara S., Nishiura M., Idei H., Kubo S., Shimozuma T., Takahashi H., Yoshimura Y., Igami H., Tamura N., Inagaki S., Mutoh T.
Publikováno v:
EPJ Web of Conferences, Vol 32, p 02006 (2012)
In the large helical device (LHD), fundamental electron cyclotron resonance heating (ECRH) by the electron Bernstein wave (EBW) excited via the ordinary-extraordinary–EBW (O-X-B) mode conversion process was performed with high power (~1MW) launchin
Externí odkaz:
https://doaj.org/article/9314fba5efff4b3ba851096310b8d993
Publikováno v:
Nucl. Fusion 59 046008 (2019)
The aim of this study is to perform a theoretical analysis of the magnetohydrodynamic (MHD) stability and energetic particle effects on a LHD equilibria, calculated during a discharge where energetic-ion-driven resistive interchange mode (EIC) events
Externí odkaz:
http://arxiv.org/abs/1904.01964
Publikováno v:
Physics of Plasmas 21, 092505 (2014)
The aim of this study is to analyze the feedback process between the magnetic turbulence and the pressure gradients in LHD inward-shifted configurations as well as its role in the transition between the soft-hard MHD regimes for instabilities driven
Externí odkaz:
http://arxiv.org/abs/1704.01622
Publikováno v:
Physics of Plasmas 21, 032501 (2014)
The optimization of LHD discharges in inward-shifted configurations with $1/3$ sawtooth like activity is an open issue. These relaxation events limit the LHD performance driving a periodic plasma deconfinement. The aim of this study is to analyze the
Externí odkaz:
http://arxiv.org/abs/1704.01619
Publikováno v:
Physics of Plasmas 19, 082501 (2012)
LHD inward-shifted configurations are unstable to resistive MHD pressure-gradient-driven modes. Sawtooth like activity was observed during LHD operation. The main drivers are the unstable modes $1/2$ and $1/3$ in the middle and inner plasma region wh
Externí odkaz:
http://arxiv.org/abs/1704.01607
Publikováno v:
Physics of Plasmas 19, 082501 (2012)
LHD inward-shifted configurations are unstable to resistive MHD pressure-gradient-driven modes. These modes drive sawtooth like events during LHD operation. In this work, we simulate sawtooth like activity and internal disruptions in order to improve
Externí odkaz:
http://arxiv.org/abs/1704.01602
Akademický článek
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